Wszystkie pola: emission monitoring - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of the possibility of using acoustic emission for monitoring technical condition of the fuel injector in 3AL25/30 engine
Autorzy:: Dudzik, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/27315939.pdf
Data publikacji:: 2018
Wydawca:: STE GROUP
Tematy:: emisja akustyczna
diagnostyka
monitoring
wtryskiwacz
układ paliwowy
acoustic emission
diagnostics
injector
fuel system
Opis:: Acoustic emission method (AE) can be used for the diagnosis of machine parts such as, for example: fuel injectors. This paper presents the methodology and research results of 3AL25/30 engine fuel injector. During research was studied one injector in good condition and second with simulated failure involving closing 2 of 9 holes of the injector tip. Research was carried out on a laboratory test stand using a set of acoustic emission Vallen System. This set included: 4 channel signal recorder AMSY 6, two measurement modules ASIP-2/S, preamplifier with a frequency range 20 kHz-1 MHz and the strengthening of 34 dB, AE signal measurement sensor type VS 150M, with a frequency range 100-450 kHz. During the study, the acoustic emission (AE) generated by tested injector was recorded. The following parameters were determined: amplitude, rise time, duration time, total time, number of events - hits, the effective value of the signal (RMS). Analysis of the results showed significantly longer total time of the injection in the case of damaged injector compared to the injector in good conditions. Signal amplitude was higher, however, the RMS signal reached approximately 3-times lower value for the injector with damaged tip. This means lower quality fuel atomization. Laboratory test results were compared with signals recorded on injectors installed in the engine. Analysis of the signals allowed detection damage of the injector installed in the engine during normal operation.
Źródło:: New Trends in Production Engineering; 2018, 1, 1; 419-425
2545-2843
Pojawia się w:: New Trends in Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Acoustic emission analysis of the plastic deformation stages of degraded low-carbon steel after long-term operation in the oil refining and petrochemical processing
Autorzy:: Lyasota, I.
Sarniak, Ł.
Kustra, P.
Powiązania:: https://bibliotekanauki.pl/articles/351029.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: monitoring
low carbon steel
plastic deformation
acoustic emission
refinery industry
Opis:: This paper presents results obtained from a laboratory investigation conducted on material from a pressure vessel after longterm operation in the oil refinery industry. The tested material contained structural defects which arose from improper heat treatment during steel plate manufacturing. Complex tensile tests with acoustic emission signal recording were conducted on both notched and unnotched specimens. The detailed analysis of different acoustic emission criteria allowed as to detect each stage of plastic deformation and microstructural damage processes after a long-term operation, and unused carbon steels during quasi-static axial tension testing. The acoustic emission activity, generated in the typical stages of material deformation, was correlated by microscopy observations during the tensile test. The results are to be used as the basis for new algorithms for the assessment of the structural condition of in-service pressure equipment.
Źródło:: Archives of Metallurgy and Materials; 2019, 64, 1; 143-151
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analiza wyników pomiarów stężeń zanieczyszczenia powietrza pyłem PM10 i PM2.5 na stacji pomiarowej plac Poznański w Bydgoszczy
Analysis of the results of measurement of concentrations of air pollution with PM10 and PM2.5 measuring station square of Poznan in Bydgoszcz
Autorzy:: Pasela, R.
Milik, J.
Budzińska, K.
Szejniuk, B.
Powiązania:: https://bibliotekanauki.pl/articles/399519.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: PM10
PM2.5
zanieczyszczenie powietrza
emisja zanieczyszczeń
emisja zanieczyszczeń monitoring
aglomeracja miejska
Bydgoszcz
air pollution
emission
monitoring
city agglomeration
Opis:: Zjawisko zanieczyszczenia pyłem zawieszonym PM10 i PM2,5 występuje w dużych aglomeracjach miejskich, gdzie głównym źródłem ich obecności jest komunikacja, co wiąże się przede wszystkim ze spalaniem paliw płynnych. Celem badań była ocena stanu zanieczyszczenia powietrza pyłem PM2,5 i PM10 dla wybranego obszaru miasta Bydgoszcz. Analizę przeprowadzono, wykorzystując dane pochodzące ze stacji monitoringu powietrza zlokalizowanej przy ul. Poznańskiej. Stacja jest własnością Wojewódzkiego Inspektoratu Ochrony Środowiska (WIOŚ) w Bydgoszczy. Badania wykazały, że najwyższe średnie dobowe stężenie pyłu wystąpiło w piątki i wynosiło odpowiednio 27,6 μg/m³ dla PM2,5 i 44,46 μg/m³ dla PM10. Zaobserwowano tendencję występowania wyższych wartości stężeń w sezonie grzewczym. Stwierdzono, iż średnie roczne stężenie pyłu zawieszonego (PM2,5 i PM10) w aglomeracji bydgoskiej jest bliskie przekroczenia poziomu dopuszczalnego ze względu na ochronę zdrowia ludzi.
The phenomenon of suspended particulate pollution PM10 and PM2.5 occurs in large urban areas where the main source of their presence is communication, which is primarily related to the combustion of liquid fuels. PM2.5 dust pollution is a major risk factor for diseases of the respiratory, cardiovascular, and allergy. Act regulating the standards and target dates for reducing concentrations of particulate matter in urban areas and in all the cities of over 100 thousand. residents of the Directive of the European Parliament and Council Directive 2008/50/EC of 21 May 2008. on ambient air quality and cleaner air for Europe (CAFE). The acceptable level of average daily concentration of PM10 is 50 μg/m³ and may be exceeded by not more than 35 times a year, while the level of allowable annual average concentration of 40 μg/m³. The aim of this study was to assess the state of air pollution of dust PM10 and PM2.5 for the selected area of the city of Bydgoszcz. The analysis was conducted using data from air monitoring stations located at Poznanska street. The station is owned by the Provincial Inspectorate for Environmental Protection (VIEP) in Bydgoszcz. The studies have shown that the annual average concentration of particulate matter analyzed station in Bydgoszcz in the years 2013–2015 amounted to PM10 41 μg/m³ PM2.5 and 23 μg/m³. The results are on the borderline of acceptable levels of concentration resulting from the Regulation of the Minister of the Environment of 2 August 2012. The concentrations of particulate matter in ambient air are strongly associated with meteorological conditions. The definitely higher concentrations observed in the autumn-winter season. The decrease in temperature causes the combustion in the boiler house of fuels with a high emissions. The highest average daily concentration of suspended particulate matter was observed on Thursday and Friday in the winter months, and while the lowest concentration was recorded in the summer months.
Źródło:: Inżynieria Ekologiczna; 2017, 18, 1; 240-246
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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